diff --git a/core/build/edk2/BUILD b/core/build/edk2/BUILD
index 7911678..e69de29 100644
--- a/core/build/edk2/BUILD
+++ b/core/build/edk2/BUILD
@@ -1,22 +0,0 @@
-genrule(
-    name = "firmware",
-    srcs = glob(["**"]),
-    outs = [
-        "OVMF_CODE.fd",
-        "OVMF_VARS.fd",
-    ],
-    cmd = """
-    (
-        # The edk2 build does not like Bazel's default genrule environment.
-        set +u
-
-        cd external/edk2
-        . edksetup.sh
-        make -C BaseTools/Source/C
-        build -DTPM2_ENABLE -DSECURE_BOOT_ENABLE -t GCC5 -a X64 -b RELEASE -p $$PWD/OvmfPkg/OvmfPkgX64.dsc
-    ) > /dev/null
-
-    cp external/edk2/Build/OvmfX64/RELEASE_GCC5/FV/{OVMF_CODE.fd,OVMF_VARS.fd} $(RULEDIR)
-    """,
-    visibility = ["//visibility:public"],
-)
diff --git a/core/build/edk2/BUILD.repo b/core/build/edk2/BUILD.repo
new file mode 100644
index 0000000..7911678
--- /dev/null
+++ b/core/build/edk2/BUILD.repo
@@ -0,0 +1,22 @@
+genrule(
+    name = "firmware",
+    srcs = glob(["**"]),
+    outs = [
+        "OVMF_CODE.fd",
+        "OVMF_VARS.fd",
+    ],
+    cmd = """
+    (
+        # The edk2 build does not like Bazel's default genrule environment.
+        set +u
+
+        cd external/edk2
+        . edksetup.sh
+        make -C BaseTools/Source/C
+        build -DTPM2_ENABLE -DSECURE_BOOT_ENABLE -t GCC5 -a X64 -b RELEASE -p $$PWD/OvmfPkg/OvmfPkgX64.dsc
+    ) > /dev/null
+
+    cp external/edk2/Build/OvmfX64/RELEASE_GCC5/FV/{OVMF_CODE.fd,OVMF_VARS.fd} $(RULEDIR)
+    """,
+    visibility = ["//visibility:public"],
+)